Home / 20,409.38-30,610.46-5,614.72

Finding the Fourth Proportional to 20,409.38, 30,610.46 and 5,614.72

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Solution

The fourth proportional to 20,409.38, 30,610.46 and 5,614.72 is: 8,421.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.38 : 30,610.46 = 5,614.72 : x
  2. Step 2: Convert to fraction form
    20,409.38/30,610.46 = 5,614.72/x
  3. Step 3: Cross multiply
    20,409.38x = 30,610.46 × 5,614.72
  4. Step 4: Simplify right side
    20,409.38x = 171,869,161.97
  5. Step 5: Solve for x
    x = 171,869,161.97/20,409.38
  6. Step 6: Final answer
    x = 8,421.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.